about 24 hours or so. so they could have time to fluff up. Hope this helps. I know how you feel, we hatched 2 magpie Ducks two days ago and wondering how to make the mother accept them so we won't have to brood them ourselves
It can, depending on what paint you used. Because of the chemicals in the paint. When we built our first duck coop, we were told we were aloawd to paint the outside, but not the inside because of the fumes.